Control pushbuttons for a radio system



FIG. 1 is a fragmentary top, front, and right side perspective view of control pushbuttons for a radio system showing our new designs;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for control pushbuttons for a radio system, as shown. 